Mike Holt

NEC Trainer / Consultant,
Mike Holt Enterprises

Mike earned a masters degree in the Business Administration Program (MBA) from the University of Miami. He earned his reputation as a National Electrical Code (NEC) expert by working his way up through the electrical trade. Formally a construction editor for two different trade publications, Mike started his career as an apprentice electrician and eventually became a master electrician, an electrical inspector, a contractor, and an educator. Since 1975, he has provided custom in-house seminars for groups such as IAEI, NECA, ICBO, IBM, AT&T, Motorola, and the U.S. Navy. Mike has taught more than 1,000 classes on 30 different electrical-related subjects — ranging from alarm installations to exam preparation and voltage drop calculations. He continues to develop seminars, videos, books, and software as well as contributing monthly Code content to EC&M magazine.

Code Q&A
Q. I understand the Code allows me to use Type AC cable with an equipment grounding (bonding) conductor for branch circuits serving patient care areas. Can I use Type MC cable with an equipment grounding (bonding) conductor for luminaires located above 7.5 feet in a patient care area?
Code Quandaries
Q. I recently came across a handhole with a metal cover in the backyard of a house that is used to splice the underground service conductors. I told the utility mechanic the cover needed to be grounded (bonded) because there could be accidental contact with live circuits.
An Inside Look at Hazardous (Classified) Locations 2
When you're looking for answers on hazardous (classified) location questions, where should you turn? Think of Articles 500 through 517 as a mini codebook
Code Q&A
Q. What are the NEC grounding requirements for a satellite dish?
Code Q&A
Q. How far away must a 120/208V, 3-phase panelboard be located from a janitorial closet sink?
Code Quandaries
Q. I was told there is a 30-day limit for extension cord use in a commercial building. What's the story?
Grounding vs Bonding — Part 12 of 12
How do you make communications systems safe?
Code Q&A
Q. Electricians in our area ground the metal conduit that runs up a utility pole to a local ground rod. Is this a Code compliant installation?
Code Q&A 1
Q. A fellow electrician told me if I were to wire an aboveground storable pool pump motor for 240V operation, the receptacle outlet would need to be located 10 feet from the pool. I thought five feet was the minimum. Who’s right?
Grounding vs Bonding — Part 11 of 12
Don’t let the bonding and grounding requirements of pools make you feel like you’re in over your head
Code Quandaries 1
Q. A new exception was added to 250.50 in the 2005 NEC, which states that concrete-encased electrodes are not required for existing buildings or structures where the conductive steel reinforcing bars aren't accessible without disturbing the concrete. Why was this exception added to the 2005 NEC, and what does this all mean?
Code Q&A
Q. How close can I run underground service conductors in a raceway to an outdoor pool?
Code Q&A
Q.When is a two-pole breaker required for a multiwire branch circuit? A.Multiwire and multiple branch circuits that supply devices or equipment on the same yoke (also called a strap) must be provided with a means to disconnect simultaneously all ...
Grounding vs Bonding — Part 10 of 12
Does the NEC require you to ground piping systems and structural steel? Be careful how you answer this question.
Code Quandaries 1
All questions and answers are based on the 2005 NEC. Q. Can a 15A, 125V receptacle be located above a suspended ceiling? A. Sure. Receptacles are permitted

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